Shy Guys (sometimes formatted as Shy-Guys[1]) are timid troublemakers and common enemies in the Mario and Yoshi series. They are famous for the masks they wear. They made their first appearance in Yume Kōjō: Doki Doki Panic, a non-Mario game; they were later carried over to the Mario universe when Super Mario Bros. 2 was created. Shy Guys usually work for Bowser and the Koopa Troop, but they originally worked for the evil king Wart.

From left to right: A Shy Guy in the NES and SNES versions, along with the Super Mario Advance exclusive Mega Guys.

Shy Guys make their first Mario game appearance in Super Mario Bros. 2, although the Shy Guys' real first appearance is in Yume Kōjō: Doki Doki Panic. In this game, Shy Guys, along with the other 8 bits, help Wart conquer Subcon. Shy Guys are the most common enemies that the four heroes meet. They attack Mario, Luigi, Princess Toadstool, and Toad by walking in their general direction. They can be easily disposed by being picked up and thrown against another enemy or into a nearby abyss. They can also be defeated by having an object thrown at them.

Red Shy Guys walk off ledges while pink ones don't, striking a resemblance to Green and Red Koopa Troopas respectively, although the primary difference is that Red Shy Guys are known to turn in the direction of the player after landing. Red ones are also known to ride Autobombs and Ostros and often appear out of Vases. Pink ones became blue in the remakes of Super Mario Bros. 2. The Super Mario Advance remake introduces Mega Guys. It takes time to pick them up because of their size. If the player picks up a Mega Guy and throws it, hitting the ground or hitting another enemy with it, it will drop a heart.

In The Super Mario Bros. Super Show!, Shy Guys made uncommon appearances as antagonists, working for King Koopa. Like most other minions of King Koopa, Shy Guys would wear costumes to go with the theme of each episode.

Shy Guys appeared commonly in issues of Nintendo Comics System, where they were depicted as somewhat disgruntled soldiers of Bowser. Along with Koopa Troopas, they appeared to be the most common minions.

Some Shy Guys and their GLOM-created sand clones appear throughout Double Trouble, but are never directly fought by Mario, who decides it is best to just ignore or avoid them.

In Leaping Lizards, some Shy Guys are spotted among the crowds attending the International Mushroom Games. Upon entering a chamber in a cave in Koopa Capers, Luigi wonders why he is suddenly "shivering like a Shy Guy" before realizing how unusually cold the room is.

In Pipe Down!, Mario and Luigi can encounter a Shy Guy hopping through the Koopahari Desert, leaving footprints in the sand that look like the indentations left by the basketball Princess Toadstool was dribbling when she disappeared. In an elevator in the Mushroom Palace, if a lever with a mushroom printed on it is pulled, some Shy Guys, Tweeters and Cheep-Cheeps will swarm Mario and Luigi, leading to a Game Over.

In Dinosaur Dilemma, Mario and Yoshi can encounter some Shy Guys, but evade the enemies by just hopping over them. In Unjust Desserts, some Shy Guys are among the enemies Bowser has Magikoopa shrink and send after the shrunken Mario, who had made himself tiny in order to enter Yoshi's body and rescue the eaten Luigi.

In Brain Drain, a group of Shy Guys will ambush Luigi if he decides to follow Princess Toadstool after arriving at Dinosaur Island. Luigi can also spot some Shy Guys holding up the lunch line (due to their mumbling) in Iggy Koopa's lair, and in the WMUSH radio station after Iggy takes it over.

Shy Guys' first chronological and true Mario appearance is in Super Mario World 2: Yoshi's Island and its remake Yoshi's Island: Super Mario Advance 3, where their name is hyphenated. Here they are extremely common and weak enemies, simply walking forward and occasionally stopping to look left and right. They sometimes appear out of Pipes unless Yoshi has a full six eggs. The colors they come in are red, yellow, green, and magenta and have different colored mask straps. Boo Guys, as well as other variants, also first appear in this game. Like other enemies, they can be defeated by jumping on them, unlike in SMB2, and can be eaten and turned into an egg. In dark levels of the game it is revealed that their shoes glow in the dark.

Shy Guys appear to be allies with Raphael the Raven in Tetris Attack. A spell was cast on all of them to work for Bowser. They appear in the 8th level, and are saved by Yoshi. It is unknown what happened to these brave Shy Guys after the events of the game. It's unknown if these Shy Guys actually serve anyone or are free Shy Guys.

In Yoshi's Story, Shy Guys are once again common enemies, walking forward and backward. Woozy Guys from Super Mario World 2: Yoshi's Island had disappeared, although more varieties rise up. Some Shy Guys carry Fruit or hide in trees. To defeat the Shy Guys that are in trees, Yoshi must Ground Pound near the tree they are hiding in, causing them to fall out. Additionally, if Yoshi Ground Pounds near a Shy Guy, its color will change, although the reason for this change is unknown.[2] If Yoshi ground pounds near a Shy Guy while under the effects of a Heart Fruit, the Shy Guy will turn into a lucky fruit.

If Yoshis eat a Shy Guy with the same color, they will be awarded with three petals on their Smile Meter instead of one. Additionally, when a Baby Yoshi eats a Shy Guy, the Yoshi Egg that is produced will be the same color as the Shy Guy. This game also introduces the first "good" Shy Guy, the White Shy Guy while the more deadly ones known as Black Shy Guys. Shy Guys have voices in this game and can be distinctly heard saying "Hei-Ho" (their Japanese name) and other sounds.

Shy Guys reappear in Yoshi Touch & Go. They are vulnerable to all attacks and are worth a Yellow Coin. In this game, like all the other enemies, bumping into a Shy guy causes an instant Game Over. Shy Guy serves the same purpose in this game as in the previous, as working as a common soldier for Baby Bowser. Many varieties of Shy Guy appear on the island, red being the most common. Balloon Shy Guys were introduced in this game as a sub-species.

Shy Guys also appear in Yoshi's Island DS, once again, as very common and weak enemies. Yoshi can use any tactic to defeat them: jumping, egg-throwing, or swallowing. While Shy Guys in this game play virtually the same role as they did in Yoshi's Island, there is a boss known as Big Guy the Stilted, a massive robot seemingly built by Shy Guys.

Other than being common enemies, Shy Guys also have their own section in the Island Museum. Yoshi can view the different types of Shy Guys in that section, though Shy Guys that do not wander on land, such as Tube Guys, are only in the marine section.

All of the colors from the original Super Mario World 2: Yoshi's Island, including blue and excluding magenta, appear in this game.

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Shy Guys are set to appear in the upcoming game Yoshi's Woolly World, if they are swallowed they are are turned into eggs. When Shy Guys are eaten in this game, their masks come off.[3]

In Mario Party 4 a Shy Guy (with Toad, a Boo, a Goomba and a Koopa Troopa) find the mystical Party Cube, with which they can create parties and game boards. In this game Shy Guy wears a fedora, much like Indiana Jones, and is hosting his own board, Shy Guy's Jungle Jam. He created the board because he wants to go an an adventure, but isn't brave enough to go on his own. Whenever he talks, he appears to be nervous and meek. Shy Guy also appears as a playable character in Beach Volley Folley.

A single, friendly, Shy Guy appears as the conductor of Shroom City's Train Station in Mario Party Advance. One of the games quests involves retrieving a ticket from him and delivering it to Goomba (an easy feat, since the Train Station is located only a few spaces away from the Goomba House). In another of the game's quests, the Shy Guy asks the Player to obtain Coal for him, because the train's supply has apparently run out. The Player can find the Coal in the Vending Machines. Once this is done, he will reward the player with the Gaddget, Cake Maker. The ending of the game says that he is starting to run low on coal again.

Multiple Shy Guys appear in Mario Party 7, though they appear as Singing Shy Guys on the Grand Canal board and as Top Hat Shy Guys on the Neon Heights board. They also appear in the background of some minigames, jumping and cheering for the players.

Shy Guy appears as an unlockable playable character in Mario Party 9. Along with Magikoopa, Shy Guy competes against the player in Solo mode, and if one of them wins a board, the player must try again. Shy Guy and Magikoopa are both unlocked by completing Solo mode once, after which they can be played in any game mode except Solo.

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Shy Guys are set to appear in Mario Party 10 as a non-playable character. So far, they have been shown to appear on a roller coaster on an amusement park-themed board. They also appear in various minigames as spectators.

While Shy Guys themselves don't appear in the game Mario Golf (they appear in artwork for the game), they are clearly referenced in the game by one of the courses, Shy Guy Desert. In addition to that, each time a player completes a hole, a silhouette of a Shy Guy is briefly shown.

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This is a Shy Guy. They're ne'er-do-wells. Big time rascals. No good... They occasionally do acrobatic attacks that have an attack power of 3. Who knows what lies in the hearts of these troublemakers? I guess they're dangerous, but they're pretty small time.

Shy Guys, as well as several variations of them, are semi-common enemies in Paper Mario. After Mario returns from Forever Forest, he finds Toad Town overrun by Shy Guys. He can hit the enemies with his Hammer to make them run out of town. Once Mario discovers Shy Guy's Toy Box, the secret hide-out of the Shy Guys, they can be fought as normal enemies. They have two main attacks: They can simply tackle Mario for 2 damage, or they can do an acrobatic attack, dealing 3 points of damage and bowing to an unseen but not unheard crowd.

This game also has Groove Guys, Shy Guys that make Mario dizzy; Sky Guys, Shy Guys that have balloons to keep them in the air; Medi Guys,Shy Guys that heal any ally; Spy Guys, Shy Guys that wear camouflage gear; and the strongest of a Shy Guy known as the Anti Guy.

It is revealed that Shy Guys have their own language called Shy Guy that only Russ T. can understand.

During the ending cinema of the game some Shy Guys can be seen talking with Watt, a baby Li'l Sparky. They can also be seen on General Guy's parade float, dancing. Also, the Shy Guys' parade float in the ending have "Heihos" ("Heiho" being Shy Guy's Japanese name) written on both the left and right of General Guy.

Although Shy Guys were not actual enemies in Paper Mario: The Thousand-Year Door, they do appear in the Audience of most of the battles, and a few statues of Shy Guys also appear on the Poshley Heights fountain. Occasionally, if part of the audience, Shy Guys will run onto the backstage and cause pieces of the set to fall on Mario or his enemies. This is also used to signal the first occurrence of a stage hazard (like fog, ice, fire, etc.). Shy Guys will give Mario Star Power along with the other audience members when he performs a move correctly. The name Heihoo, which is Japanese for "Shy Guy," appears alongside other scrapped enemy names (among which are also Faia Heihoo "Fire Shy Guy", Komando Heihoo "Commando Shy Guy", and Burakku Heihoo "Black Shy Guy") in Paper Mario: The Thousand-Year Door's coding, suggesting that Shy Guys were once going to appear as enemies in that game.[4]

The X-Nauts somewhat take a role of Shy Guys, as their commander, Lord Crump, gets inside a machine that slightly resembles General Guy's tank (except with arms and legs). In addition, when the X-Nauts are running away from the Great Tree, one of them falls over, mirroring the straggler Shy Guy in the Shy Squad in the first Paper Mario. Additionally, X-Nauts make formations similar to the Shy Squad and others when attacking Mario during the ship battle between Crump and Cortez, and they are fought before Crump himself is faced.

A Shy Guy may also appear when the Special move Clock Out is used. When this happens it will try to prevent Mario from immobilizing his Enemies.

Shy Guys appear in Paper Mario: Sticker Star with their Super Paper Mario appearance, although their feet are more within their robes. They only appear in World 3 and World 4. In battle, a Shy Guy's only attack is running up to Mario and flailing its arms at him. Sometimes, the Shy Guy might trip before reaching Mario, cancelling the attacks. Also, if Mario uses a Tail Sticker, the Shy Guy will push Mario and try to steal the sticker. A Shy Guy can also knock away one of Mario's attacks if he uses the Battle Spinner that causes the Shy Guy to take up its turn. Along with standard Shy Guys, a new sub-species known as Mariachi Guys appear. There are also Shy Guys holding paper clips, known as Clip Guys, and Paint Guys, who hold a bucket of paint. Both of these enemies can assist a Shy Guy in battle. Additionally, Spear Guys and Snifits also appear in the game. Additionally, two Shy Guys are found harrassing the Travelling Toad in World 4-6. They are very powerful, similar to Anti Guys, each having 120 HP and an attack power of 7. When defeated, they drop a Secret Door sticker. Unlike Snifits, Shy Guys will take damage from staying in poison too long in battle and will try to find unpoisoned ground, but the poison layout is good because if there are a group, they lose more HP than Mario though Mario will get harmed by poison as well.

A Shy Guy is an unlockable character in Mario Tennis for the Nintendo 64 (where he is unlocked after the Star Cup is won in Singles). This is Shy Guy's first playable appearance. It is a Technique character, and during its trophy ceremony it turns into a Fly Guy and starts flying around. Shy Guy comes back for another round of tennis in Mario Power Tennis, but this time it is available from the start. Once again, it is a Technique character. For its Offensive Power Shot, it turns into a Spear Guy and electrifies the ball. For its Defensive Power Shot, it turns into a Spear Guy, but this time it extends its spear to hit the ball. When it wins a Singles Tournament, a cutscene plays. During this, it walks up to the podium where the trophy is while Luigi is there applauding it. Accidentally, Shy Guy trips over a step on the small staircase and its mask falls off. The screen doesn't show what it looks like without its mask but an astonished Luigi sees it and just stands there with his mouth hanging wide open. Shy Guy quickly puts its mask back on, takes the trophy and walks off of the podium, thus ending the cutscene. This implies that Shy Guys probably wear masks because they are hiding something very scary or disturbing, or it might be because of their extreme shyness, hence their name.

Shy Guys also appear in the Yoshi's Story stage of Super Smash Bros. Melee. Although they are actually Fly Guys, they are called Shy Guys. The Fly Guys will fly past the stage. They are unable to damage players, but they carry Food with them, which can be dropped on the ground if they are attacked. If the player KOs a Shy Guy, they receive the bonus "Shy Guy KO". They also have a trophy in their honor.

Shy Guys appear in the Mario Circuit stage, racing in go-karts in the game Super Smash Bros. Brawl. They are the only racers, and they will appear going across the top or bottom of the stage. If hit, the Shy Guy racers will spin out of control and wipe out, but come back shortly afterwards. It is possible to get rid of every Shy Guy on the track. If this happens no more Shy Guys will appear. They also have a trophy and sticker too. Fly Guys also appear on the Yoshi's Island stage.

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Multiple types of Shy Guys also appear in the Nintendo 3DS version as enemies in the Smash Run mode. There are four colors that appear, each with their own attributes: the standard red, which have higher attack; green, which run faster; light-blue, which have higher defense, and yellow, which jump higher. Each type attacks by charging at the player, hitting them multiple times. The stat boosts they leave behind are also mostly based on their color and attributes.

A Shy Guy is playable in the download play version of Mario Kart DS, with colors such as white, black, green, light blue, dark blue, red, yellow or pink, depending on what number player you are. Shy Guy's standard kart, which has the same stats as Yoshi'sStandard YS, excels in acceleration and handling.

In Mario Kart Wii, Shy Guys appear as spectators and stage hazards on various tracks. In the city section of Moonview Highway, the Shy Guy emblem can be seen on the guard rails. Also, Shy Guys appear on DK Summit as a snowboarder and track hazard doing tricks in the half pipe. If a player hits one of the different-colored Shy Guys, the player will spin out and slow down. The Shy Guy will not stop, however. Also, a course named after them, Shy Guy Beach from Mario Kart: Super Circuit, returns as a retro course.

Shy Guy appears a playable character in the Nintendo 3DS game, Mario Kart 7. Unlike in Mario Kart DS, it can be used without using download play, but it can also be played through download play if other players do not have Mario Kart 7. However, players who use download play will only be restricted to the standard parts, but the Shy Guys will come in different colors as a result.

He can be unlocked by getting a gold trophy in the 150cc Shell Cup. He is a Feather class racer, with acceleration and Off-road being its best stats. There is one course that belongs to Shy Guy in the game, which is known as Shy Guy Bazaar. This course features multiple Super Mario Bros. 2 references, such as Shy Guys riding on magic carpets and vases.

Both a playable Shy Guy and other non-playable Shy Guys appear in Mario Kart 8. Unlike Mario Kart 7, the red playable Shy Guy is available from the start; additionally, by purchasing both the Animal Crossing and The Legend of Zelda downloadable content packs, eight additional Shy Guy colors will be unlocked for use.

A course themed after them, known as Shy Guy Falls, appears as the final course in the Flower Cup. Here, Shy Guys of various colors can be seen mining on various parts of the track; they can also be found mining when entering the mines portion of the course Wii Wario's Gold Mine. As seen on an advertisement that can be found in Toad Harbor, they also have a business known as Shy Guy Metals, which has been ongoing "since 1987" (a nod to their original appearance in Yume Kōjō: Doki Doki Panic). They also appear in GCN Sherbet Land as obstacles in the same manner as on the original track. Shy Guys are also visible watching both on the sidelines and in stands on various tracks.

Shy Guy is the Staff Ghost for Shy Guy Falls. Beating this ghost unlocks a stamp depicting a Shy Guy mining a crystal.

Shy Guys reappear as an enemy in Mario & Luigi: Dream Team. Shy Guys can only be fought after the Shy Guy Airtub they were inhabiting has been destroyed, and always appear in a group of three when battled at that point. They are never found on the field. In battle, they attack by bouncing to either side of Mario or Luigi, and running at them simultaneously. This can be dodged by jumping over or on to the Shy Guys. Cyan Shy Guys known as Walker Guys appear in Neo Bowser Castle. These type of Shy Guys hold chains against Chain Chomps.

A stronger variation of Shy Guys called Shy Guy Rs appear later on in the game.

In Mario Pinball Land, multiple colored Shy Guys appear in Frosty Frontier and Shifting Sands areas. In the area Frosty Frontier, Shy Guys skate around the screen and Mario has to hit them all to get a star. In the Shifting Sands area, Mario encounters them 3 times, once before he makes it into King Tut's pyramid and twice inside the pyramid. But he encounters them in the different places they all do the same method. When outside the pyramid, they hide behind cacti and run from cactus to cactus. As they run, Mario has to hit them. If he is able to hit them all, he gets a star. When inside the pyramid, the Shy Guys hide behind Vases instead of cactuses. Mario has to hit them all to get a switch to open in the floor so he can get to King Tut.

In Mario Super Sluggers, all the Shy Guys have their fielding skills boosted a few levels, with the Black Shy Guy showing the best fielding abilities.

Regarding chemistry, in Mario Superstar Baseball, Shy Guys show good chemistry with Birdo and Monty Mole, while showing bad chemistry with Baby Mario and Baby Luigi. In Mario Super Sluggers, the Shy Guys maintain their good chemistry with Birdo and Monty Mole, but they also display good chemistry with Boo. Their bad chemistry has also be expanded in that their relationship with Yoshi, the Yoshi species, and, once again, Baby Mario and Baby Luigi.

Shy Guys appear as sidekicks in Mario Strikers Charged. They are balanced players. Their skillshot is the Bullet Bill Blast. When given enough time, a Shy Guy will charge fully before riding a fast Bullet Bill aimed right at the goalie. When this move is performed, the goalkeeper and all players near him (including the Shy Guy) will be temporarily stunned. Shy Guy gets up more quickly than the other teammates, however, so he may quickly get to the ball and score. Other allies not affected by the blast may take the ball and score as well. Alternatively, an opposing player trailing the Bullet Bill at a safe distance may sweep through and pass the ball downfield to one of their teammates.

When Shy Guy scores, sometimes it will run, trip, and its mask will fall off, similar to the Mario Power Tennis trophy award. While this would seem to confirm that Shy Guys' masks are not their actual faces, various other scenes show that the mask is capable of different facial expressions, such as a happy face and a mad face.

Shy Guy is a referee in the Wii/DS crossover, Mario & Sonic at the Olympic Games. Shy Guy is seen in his normal outfit of red robes and randomly hosts events with a cast of other Mario and Sonic Characters.

Shy Guys reappear in Mario Sports Mix as goalkeepers in a Hockey game. When a player uses their special during a Hockey, Shy Guy will disappear when the special is happening and then reappear when it ends. Players cannot control them, but they can command Shy Guys to lunge by pressing . Shy Guys also appear in the Western Junction court, where various they throw either banana peels or coins. They also appear in the crowd of Wario Factory in multiple colors.

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Shy Guys appear as enemies in Captain Toad: Treasure Tracker. Like Goombas in 3D Mario games, they chase after Toad upon seeing him, but get tired and stop after a while.[5] In the game box art, their robe's texture appear to be normal, but in-game, it appears to be made of wool instead of tissue/silk. Two types of Shy Guys appear: blue stationary Shy Guys that periodically turn 90° and red Shy Guys that walk along paths.

Shy Guys first appear in Super Mario Bros. 2, where they are minions of the tyrannical king Wart and the 8 bits. However, their first appearance chronologically is in Super Mario World 2: Yoshi's Island, where they are members of the Koopa Troop.

Since Super Mario Bros. 2, Shy Guys have been seen working for many other villains, including Smithy, Donkey Kong and Kamek. One Shy Guy (the White Shy Guy) is actually an ally of Yoshi. It can be assumed that Shy Guys never have had a true allegiance.

All Shy Guys (with the minor exception of some Shy Guys from Mario Strikers Charged) wear robes that can be red, pink, blue, light blue, yellow, orange, green, black, gray, or white. They are all fairly short and wear masks with holes on them that represent eyes and a mouth. It is unknown what is behind these masks. However, in Shy Guy's trophy celebration movie in Mario Power Tennis, Luigi sees a Shy Guy without his mask on and is shocked at the sight. Also, in Luigi's Mansion, Luigi can use the Poltergust 3000 to pull a mask off a Shy Guy Ghost. Shy Guy Ghosts do not have eyes on their masks, but their faces are pure blackness with two glowing yellow eyes where the mask's eyes would be. It is unknown whether this is what a Shy Guy's face looks like when it is alive, as they, like the game's other generic ghosts, were imitations created by Vincent Van Gore.

It is also possible that the Shy Guys' so-called "masks" are not masks at all, but rather faces. In Yoshi's Island DS, the sleeping Shy Guy's mask eye holes are closed, supporting this. Also, the Bandit sub-species of Shy Guy have been shown to have the ability to change the expressions on their masks as if they were their actual faces. The picture shown when Bandit wins in Super Mario World 2Mini-Battles even suggests that he is able to stick out his tongue. Also, Super Mario RPG's Shy Guys' eye holes comically spin when the Shy Guy is confused, much like people's eyes do in cartoon gags; the Shy Guys of Super Mario RPG are also able to blush on their masks. Spear Guys and Dancing Spear Guys are perfectly capable of moving their mouth holes when chanting and singing, as Super Mario World 2: Yoshi's Island shows, while Boo Guys are shown regularly changing their expressions and blinking. Most recently, in Mario Strikers Charged, Shy Guys have been shown to yet again be perfectly able to change the expressions on their masks.

Some early Super Mario Bros. 2 artwork of Shy Guys, as well as The Super Mario Bros. Super Show!, depicted Shy Guys as wearing strange, mask-like badges depicting an angry face, similar to that of Phanto. It is unknown what this badge represents, but it is possible that it is an emblem of the 8 bits. Another Shy Guy-related element seen only in Super Mario Bros. 2. and The Super Mario Bros. Super Show! are also notable for using game artwork of the earliest forms of Shy Guys, making them tall, stout, and human-like; however, the appearance of Shy Guys was later redesigned to their in-game sprite appearance in Super Mario Bros. 2.

In the first few episodes of The Super Mario Bros. Super Show!, Shy Guys were depicted as being similar in appearance to their game counterparts, though with one large exception - their masks possessed only two holes. They only had eye holes perpetually in a scowling position. Later episodes of the show would have Shy Guys resembling their game versions more with three holes in their mask, all of which were perfectly circular.

During the events in Mario Power Tennis, a Shy Guy will receive its trophy from Luigi. When it climbs the stairs, it accidentally stumbles on the last step and has its mask fall down, revealing its face. Only Luigi sees the Shy Guy's true face and that makes him shocked. The player never sees the actual face, and the Shy Guy puts its mask back on quickly. This implies that Shy Guys wear masks to hide a secret of some kind. Due to Luigi's reaction, whatever the Shy Guy had underneath its mask is quite disturbing.

In Mario Strikers Charged, one of Shy Guy's animations has it tripping and losing its mask. Like with Mario Power Tennis, its true face is not seen by the player.

Sometimes, when Shy Guy's mask falls off, what appears to be a mask strap tends to stay on its head.

In Super Smash Bros. for Nintendo 3DS, the trophy description for Shy Guy + Standard Kart states that Shy Guy made his playable debut in the Mario Kart series in Mario Kart 7; technically, however, his playable debut in Mario Kart was actually in Mario Kart DS, albeit only in download play.